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» TECHNICAL CATALOGUE
ROOF FANROOFMASTER STEC
NON-INSULATED VERSIONAIR MOVEMENT
ROOF FANS
AIR COMFORT
Fläkt Woods 10076 GB 2017.12.11 Specifications are subject to alteration without notice
Roofmaster - Technical Catalogue STEC Non-insulated 3
CONTENTS
GENERAL DESCRIPTION Application/specification ..........................................................................4 Features ...........................................................................................................4 Material and design ....................................................................................4 Motor and impeller ......................................................................................4 Wiring charts .................................................................................................4 Speed control .................................................................................................4 EC controller ...................................................................................................4 Easy installation and service ................................................................. 5 Demand controlled ventilation ............................................................... 5 Accessories .................................................................................................. 5
PERFORMANCE DATA AND TABLES ............................................................ 6
FAN CHART EXPLANATION AND DEFINITIONS ..........................................7
TECHNICAL DATA INCL. DIMENSIONS STEC-190 ........................................................................................................ 8 STEC-225 ...................................................................................................... 10 STEC-310 .......................................................................................................12 STEC-355 .......................................................................................................14 STEC-400 ...................................................................................................... 16 STEC-450 .......................................................................................................18 STEC-500 ......................................................................................................20 STEC-630 ......................................................................................................22
ACCESSORIES INCLUDED IN FAN PACKAGES SAFE Safety switch ..................................................................................24 EC controller ................................................................................................24
ACCESSORIES TO BE ORDERED SEPARATELY BOGA Roof curb with insulation EI30 ............................................. 25 STEZ-01 Flat roof socket ...................................................................... 26 STEZ-02 Flexible connection ...............................................................27 STEZ-04 Mounting plate .........................................................................27 STEZ-05 Back draught shutter ............................................................27 STEZ-07 Inlet sound attenuator...........................................................28 STYZ-01-51-0-1 Potentiometer ............................................................28
WIRING DIAGRAMS Wiring diagram A, STEC-190...630 ....................................................29 Wiring diagram B, STEC-190...630 ....................................................30
PRODUCT AND ACCESSORY CODES ...........................................................31
Fläkt Woods 10076 GB 2017.12.11 Specifications are subject to alteration without notice
STEC Non-insulated Roofmaster - Technical Catalogue4
GENERAL DESCRIPTION
APPLICATION/SPECIFICATIONSTEC non-insulated roof fan is designed to be used for the extraction of exhaust air and other non-aggressive gases where low energy consumption, simple construction and demand con-trolled ventilation are required. It can be installed directly on the concrete or alternatively on a roof curb. The existing unit can be exchanged by using an installation frame, which is always includ-ed as standard in the delivery of STEC roof fan (sizes 225 - 630).
STEC is equipped with high efficiency EC-motors with integrated speed controller. The plastic impeller is optimized for high efficiency. The casing and motor-impeller-combination can be opened for easy service and maintenance. The fan is discharging vertically.
SPECIFICATION
Product type: STEC non-insulated roof fan
Impeller type: Plastic impeller with integrated EC motor
Insulation: Fan casing is non-insulated
Discharge: Vertical
Temperature: Ambient temperature up to + 60 °C (see motor table for each size)
Environment class: C4 (EN ISO 12944-2)
Motor: EC outer rotor motor
Electrical supply Sizes 190…400: 1~230 VAC 50 Hz Sizes 450…630: 3~400 VAC 50 Hz
Speed control: 0-10 V signal Using separate control accessories
Regulations complied: 1253/2014 for roof fan as NRVU/UVU 327/2011 for motorized impeller inside
All components are designed and manufactured in accordance with quality assurance system ISO 9001 and the environmental management system ISO 14001.
The roof fan is CE marked.
FEATURES• 8 sizes• Volume flow rate up to 4.5 m3/s (16 200 m3/h)• Max pressure rise up to 1 000 Pa
MATERIAL AND DESIGNThe casing is made of black pre-painted galvanized sheet metal or aluminum and zinc coated sheet metal. Surface treatment meets requirements for environmental class C4. The fan dis-charges upwards.
MOTOR AND IMPELLERThe fans use external rotor EC motors with integrated speed con-troller. The motor is in the airstream and is cooled by the exhaust air. The impeller is made of plastic and has backward curved blades. The IP class for the motor is IP 54, insulation class is B and all motors are equipped with thermal overload protector (TOP) that is internally connected.
Fan can be equipped with an EC controller. All fans are balanced to meet the vibration level of 4.5 mm/s RMS ISO 14694.
WIRING CHARTSWiring charts are presented on pages 29 - 30.
SPEED CONTROLMotor speed can be controlled using analog 0 - 10 V signal or using an EC controller. EC CONTROLLERThe EC controller is installed inside the casing. The EC controller can be ordered as a ready to be used part. In this case it is in-cluded in the fan ordering code (see codes on page 31).
It is, however, not automatically included in the standard version of STEC so please check the ordering codes. The EC controller in-cludes the following operations:
• Single-speed use: speed is set using Low potentiometer
• Two-speed operation is set using Low and High potentiometers
• Relay output can be selected for either alarm or running indication
• 0 - 10 V control from BMS (Building Management System)
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Roofmaster - Technical Catalogue STEC Non-insulated 5
EASY INSTALLATION AND SERVICE Installation is presented in the installation manual and various control possibilities in a separate section of this catalogue.
DEMAND CONTROLLED VENTILATIONDemand controlled ventilation, DCV, is required by ErP Regula-tions. In practise this means that all roof fans shall be equipped with a speed controller. STEC roof fan range with EC motor has an integrated speed controller and thus the whole fan range is fully ErP compliant also in this sense.
Using DCV it is easy to adjust the correct fan speed and optimize the energy consumption.
Different sensors and controllers can be connected to the speed control system.
ACCESSORIES INCLUDED IN FAN PACKAGESSee the roof fan product code: “accessory package (bbb)” on page 31.
0 = STEC fan basic version
1 = STEC fan including safety switch (not wired, the cable is not included in delivery)
2 = STEC fan including EC controller (connected, the cable includ-ed) and safety switch (not wired, the cable is not included in delivery)
ACCESSORIES TO BE ORDERED SEPARATELY
BOGARoof curb
STEZ-07Inlet sound attenuator
STEZ-04Mounting plate
STYZ-01-51Potentiometer
STEZ-01Flat roof socket
STEZ-02Flexible connection
STEZ-05Back draught shutter
STEC can be installed on the concrete or on a roof curb using an installation frame.
The existing unit can be exchanged by using an installation frame, which is always included as standard in the delivery of STEC roof fan (except the smallest size 190). The fan is equipped as stand-ard with an opening mechanism that can be locked to open posi-tion. The impeller can be easily cleaned, if necessary.
REPLACING THE EXISTING ROOF FAN
STEC roof fans in sizes 225 - 630 are equipped with a mounting frame as standard. The mounting frame can be installed on the existing base made of concrete or on a roof curb.
STEC roof fan size 190 is delivered without the mounting frame. The fan can be installed on the concrete or on a roof curb.
As the fans have as standard the possibility to adjust the fan speed it is easy to replace the existing fan and adjust the air flow.
Sizes 225 - 630Size 190
Fläkt Woods 10076 GB 2017.12.11 Specifications are subject to alteration without notice
STEC Non-insulated Roofmaster - Technical Catalogue6
PERFORMANCE DATA AND TABLES
NON-INSULATED ROOFMASTER STEC
MAX VOLUME FLOW RATE m3/s AS FUNCTION OF STATIC PRESSURE
MAX VOLUME FLOW RATE m3/h AS FUNCTION OF STATIC PRESSURE
SizePressure (Pa)
50 100 150 200 250 300 350 400 450 500 550 600 650 700 750 800 850 900 950 1000STEC-190 0.163 0.154 0.145 0.135 0.124 0.111 0.095 0.074 0.039
STEC-225 0.232 0.215 0.193 0.166 0.125 0.052
STEC-310 0.528 0.489 0.441 0.381 0.303 0.191
STEC-355 0.785 0.727 0.662 0.586 0.492 0.363 0.108
STEC-400 1.173 1.123 1.068 1.006 0.933 0.846 0.736 0.583 0.333
STEC-450 1.752 1.703 1.651 1.594 1.532 1.463 1.386 1.3 1.201 1.085 0.941 0.742
STEC-500 2.854 2.803 2.75 2.695 2.636 2.575 2.511 2.442 2.369 2.291 2.206 2.113 2.011 1.895 1.763 1.607 1.415 1.172 0.855 0.475
STEC-630 4.658 4.543 4.424 4.301 4.173 4.041 3.903 3.758 3.605 3.444 3.271 3.086 2.883 2.657 2.399 2.086 1.656
Volume flow rate m3/s
SizePressure (Pa)
50 100 150 200 250 300 350 400 450 500 550 600 650 700 750 800 850 900 950 1000STEC-190 587 554 522 486 446 400 342 266 140
STEC-225 835 774 695 598 450 187
STEC-310 1901 1760 1588 1372 1091 688
STEC-355 2826 2617 2383 2110 1771 1307 389
STEC-400 4223 4043 3845 3622 3359 3046 2650 2099 1199
STEC-450 6307 6131 5944 5738 5515 5267 4990 4680 4324 3906 3388 2671
STEC-500 10274 10091 9900 9702 9490 9270 9040 8791 8528 8248 7942 7607 7240 6822 6347 5785 5094 4219 3078 1710
STEC-630 16769 16355 15926 15484 15023 14548 14051 13529 12978 12398 11776 11110 10379 9565 8636 7510 5962
Volume flow rate m3/h
0 0,5 1 1,5 2 2,5 3 3,5 4,54 5
0 2000 4000 6000 8000 10000 12000 14000 16000 18000
400
600
800
1000
1200
200
0
m3/s
m3/h
Volume flow rate
Stat
ic P
ress
ure
(Pa)
STEC-450 STEC-500 STEC-630STEC-400STEC-355
STEC-310STEC-225
STEC-190
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Roofmaster - Technical Catalogue STEC Non-insulated 7
46%
45
40
45
40
0 500 1000 1500 2000
0
50
100
150
200
250
300
350
400
0 0,1 0,2 0,3 0,4 0,5 0,6
qv (m³/h)
Δps(P
a)
qv (m3/s)
1550 r/min
1400
1200
1000
65
60 dB(A)
55
30
FAN CHART EXPLANATION AND DEFINITIONS
SYMBOLS
SOUND DATAThe total A-weighted sound power level to surroundings, LwA, can be read in the fan chart. The correction coefficients Koct by octave bands can be read in the table below the fan chart. The sound power level by octave band to the duct or to the surroundings (without A-weight-ing) can be obtained by using the following formula:
Lwoct = LwA + Koct
SOUND PRESSURE LEVEL AND REMOTE ATTENUATIONDistance L (m) 1 3 5 10 15 20 25 30 40
Attenuation ∆L (dB) 7 17 22 28 31 34 36 37 40
The total sound pressure level to surroundings at different distances can be estimated using the following formula:
LpA = LwA – ∆L
FAN DATAThe fan data is presented using fan-motor-speed controller combination. For nominal flow rate, see each size.
The fan data is presented at density 1.2 kg/m2 and tested according to ISO 5801 and ISO 13347-2.
w
u
u
v
y
u qv Volume flow rate m3/s, m3/h
v ∆ps Fan static pressure Pa
w Fan max speed r/min
x h Overall static efficiency at max r/min %
y LwA A-weighted total sound level to surroundings dB(A)
LWoct Sound power level by octave bands (without A-weighting) dB
Koct Correction when diving into different octave bands dB
∆L Remote attenuation (given values calculated for an ideal case in a halfspace) dB
z qnom Nominal flow rate (m³/s)
See Example on this page
THE SYMBOLS USED:
Fan code = fan type and size.
Min r/min = minimum fan speed where the sound power level correction Koct is still applicable.
Max r/min = maximum fan speed where the sound power level correction Koct is still applicable.
Correction = Sound power level correction factors Koct for the octave bands 63 to 8000 Hz.
x
z
EXAMPLESound pressure level LpA at 10 m distance:
Operation point 0,3 m3/s / 150 Pa
LwA = 61 dB(A) according to fan chart
LpA at 10 m: 61 dB(A) – 28 dB(A) = 33 dB(A)
The operation point and LwA are presented in the above fan chart and table.
Fläkt Woods 10076 GB 2017.12.11 Specifications are subject to alteration without notice
STEC Non-insulated Roofmaster - Technical Catalogue8
FAN DATA
TECHNICAL DATA - STEC-190
For information how to calculate sound data, sound pressure level and remote attenuation, see page 7.
Fan code Sound path Min r/min Max r/minCorrection Koct (dB) in octave band mid-frequency (Hz)
63 125 250 500 1000 2000 4000 8000
STEC-190
Surroundings 0 767 5 –1 –6 –2 –3 –11 –19 –20Surroundings 767 1534 –6 –4 –6 –2 –6 –5 –15 –28Surroundings 1534 3043 –14 –11 –3 –3 –7 –5 –12 –16Surroundings 3043 3070 –16 –14 –5 –2 –7 –6 –11 –13
Inlet duct 0 767 5 –2 –5 –7 0 –11 –21 –23Inlet duct 767 1534 –9 –2 –5 –5 –10 –5 –7 –30Inlet duct 1534 3043 –11 –8 –1 –5 –10 –8 –11 –16Inlet duct 3043 3070 –13 –9 –5 0 –10 –9 –13 –14
SOUND DATA
70
65 dB(A)
60
3070 r/min
2500
2000
1500
37%
35
30
35
30
20
0 200 400 600
0
50
100
150
200
250
300
350
400
450
500
0 0,05 0,1 0,15 0,2
qv (m³/h)
Δps(P
a)
qv (m3/s)
Nominal flow rate according to Regulation 1253/2014 is 0.148 m³/s. The fan is classified as NRVU-UVU.
Fläkt Woods 10076 GB 2017.12.11 Specifications are subject to alteration without notice
Roofmaster - Technical Catalogue STEC Non-insulated 9
TECHNICAL DATA - STEC-190
DIMENSIONS AND WEIGHT
358348
245
130
358348
245
130
Weight: 8 kgRoof free outlet area: 0.039 m2
ACCESSORIES
Roof curb BOGA-005-1-c-2
Potentiometer STYZ-01-51-0-1
No mounting frame is included for size 190.
Fan code Nom. power kW Supply voltage Max Speed
r/minNom.
current ATemperature
range °C
STEC-190 0.083 1~ 200-240 VAC 50/60 Hz 3070 0.75 –25 - +60
FAN AND MOTOR DATAPRODUCT CODERoof Fan STEC-190-11b-c-0-1
Size (a)
Motor type (bbb)1 = 1-phase motor
Insulation (bbb)1 = non-insulated version
Accessory package (bbb)0 = basic1 = including safety switch2 = including safety switch and EC controller
Material (c)1 = painted galvanised sheet metal, black2 = Al/Zn coated sheet metal Construction (d)0 = standard
Generation (e)
WIRING
A STEC-190-111-c-0-1 (fan packages 0 & 1)
B STEC-190-112-c-0-1 (fan package 2)
See corresponding wiring diagram on pages 29 - 30.
Fläkt Woods 10076 GB 2017.12.11 Specifications are subject to alteration without notice
STEC Non-insulated Roofmaster - Technical Catalogue10
TECHNICAL DATA - STEC-225
FAN DATA
For information how to calculate sound data, sound pressure level and remote attenuation, see page 7.
Fan code Sound path Min r/min Max r/minCorrection Koct (dB) in octave band mid-frequency (Hz)
63 125 250 500 1000 2000 4000 8000
STEC-225
Surroundings 0 1533 –9 –5 –6 –4 –5 –5 –17 –24Surroundings 1534 2050 –10 –9 –5 –4 –7 –4 –13 –15
Inlet duct 0 1533 –6 –2 –4 –10 –5 –9 –18 –24Inlet duct 1534 2050 –7 –8 –2 –10 –9 –10 –15 –19
7065 dB(A)60
55
2050 r/min
1800
1400
1000
42%
40
30
40
30
20
0 200 400 600 800
0
50
100
150
200
250
300
350
0 0,05 0,1 0,15 0,2 0,25
qv (m³/h)
Δps(P
a)
qv (m3/s)
SOUND DATA
Nominal flow rate according to Regulation 1253/2014 is 0.224 m3/s. The fan is classified as NRVU-UVU.
Fläkt Woods 10076 GB 2017.12.11 Specifications are subject to alteration without notice
Roofmaster - Technical Catalogue STEC Non-insulated 11
TECHNICAL DATA - STEC-225
DIMENSIONS AND WEIGHT
467469
234
Ø12
442
368
398 368
Weight: 10 kgRoof free outlet area: 0.039 m2
ACCESSORIES
Roof curb BOGA-01-1-c-2
Flat roof socket STEZ-01-1
Flexible connecton STEZ-02-1
Adapter plate STEZ-04-1
Back draught shutter STEZ-05-1
Inlet sound attenuator STEZ-07-1
Potentiometer STYZ-01-51-0-1
Mounting frame (included in delivery).
Fan code Nom. power kW Supply voltage Max Speed
r/minNom.
current ATemperature
range °C
STEC-225 0.082 1~ 200-240 VAC 50/60 Hz 2050 0.7 –25 - +60
FAN AND MOTOR DATAPRODUCT CODERoof Fan STEC-225-11b-c-0-1
Size (a)
Motor type (bbb)1 = 1-phase motor
Insulation (bbb)1 = non-insulated version
Accessory package (bbb)0 = basic1 = including safety switch2 = including safety switch and EC controller
Material (c)1 = painted galvanised sheet metal, black2 = Al/Zn coated sheet metal Construction (d)0 = standard
Generation (e)
WIRING
A STEC-225-111-c-0-1 (fan packages 0 & 1)
B STEC-225-112-c-0-1 (fan package 2)
See corresponding wiring diagram on pages 29 - 30.
Fläkt Woods 10076 GB 2017.12.11 Specifications are subject to alteration without notice
STEC Non-insulated Roofmaster - Technical Catalogue12
TECHNICAL DATA - STEC-310
SOUND DATA
FAN DATA
For information how to calculate sound data, sound pressure level and remote attenuation, see page 7.
46%
45
40
45
40
0 500 1000 1500 2000
0
50
100
150
200
250
300
350
400
0 0,1 0,2 0,3 0,4 0,5 0,6
qv (m³/h)
Δps(P
a)
qv (m3/s)
1550 r/min
1400
1200
1000
65
60 dB(A)
55
30
Fan code Sound path Min r/min Max r/minCorrection Koct (dB) in octave band mid-frequency (Hz)
63 125 250 500 1000 2000 4000 8000
STEC-310
Surroundings 0 894 1 –3 0 0 –5 –13 –20 –26Surroundings 894 1550 –8 –3 –2 –1 –4 –10 –18 –27
Inlet duct 0 894 –1 0 –2 –6 –11 –9 –23 –29Inlet duct 894 1550 –13 –1 –3 –7 –10 –13 –17 –26
Nominal flow rate according to Regulation 1253/2014 is 0.487 m³/s. The fan is classified as NRVU-UVU.
Fläkt Woods 10076 GB 2017.12.11 Specifications are subject to alteration without notice
Roofmaster - Technical Catalogue STEC Non-insulated 13
TECHNICAL DATA - STEC-310
Weight: 16 kgRoof free outlet area: 0.058 m2
DIMENSIONS AND WEIGHT
ACCESSORIES
Roof curb BOGA-02-1-c-2
Flat roof socket STEZ-01-2
Flexible connecton STEZ-02-2
Adapter plate STEZ-04-2
Back draught shutter STEZ-05-2
Inlet sound attenuator STEZ-07-2
Potentiometer STYZ-01-51-0-1
Mounting frame (included in delivery).
Fan code Nom. power kW Supply voltage Max Speed
r/minNom.
current ATemperature
range °C
STEC-310 0.15 1~ 200-240 VAC 50/60 Hz 1550 1.2 –25 - +60
FAN AND MOTOR DATAPRODUCT CODERoof Fan STEC-310-11b-c-0-1
Size (a)
Motor type (bbb)1 = 1-phase motor
Insulation (bbb)1 = non-insulated version
Accessory package (bbb)0 = basic1 = including safety switch2 = including safety switch and EC controller
Material (c)1 = painted galvanised sheet metal, black2 = Al/Zn coated sheet metal Construction (d)0 = standard
Generation (e)
WIRING
A STEC-310-111-c-0-1 (fan packages 0 & 1)
B STEC-310-112-c-0-1 (fan package 2)
See corresponding wiring diagram on pages 29 - 30.
467469
314
Ø12
368
442
368398
Fläkt Woods 10076 GB 2017.12.11 Specifications are subject to alteration without notice
STEC Non-insulated Roofmaster - Technical Catalogue14
TECHNICAL DATA - STEC-355
FAN DATA
70
6560 dB(A)55
1410 r/min
1200
1000
800
48%
45
40
45
40
30
0 500 1000 1500 2000 2500 3000
0
50
100
150
200
250
300
350
400
0 0,1 0,2 0,3 0,4 0,5 0,6 0,7 0,8 0,9
qv (m³/h)
Δps(P
a)
qv (m3/s)
Nominal flow rate according to Regulation 1253/2014 is 0.716 m³/s. The fan is classified as NRVU-UVU.
SOUND DATA
For information how to calculate sound data, sound pressure level and remote attenuation, see page 7.
Fan code Sound path Min r/min Max r/minCorrection Koct (dB) in octave band mid-frequency (Hz)
63 125 250 500 1000 2000 4000 8000
STEC-355
Surroundings 0 894 1 –3 0 0 –5 –13 –20 –26Surroundings 894 1410 –8 –3 –2 –1 –4 –10 –18 –27
Inlet duct 0 894 –1 0 –2 –6 –11 –9 –23 –29Inlet duct 894 1410 –13 –1 –3 –7 –10 –13 –17 –26
Fläkt Woods 10076 GB 2017.12.11 Specifications are subject to alteration without notice
Roofmaster - Technical Catalogue STEC Non-insulated 15
TECHNICAL DATA - STEC-355
DIMENSIONS AND WEIGHT
577579
349
Ø12
468
552
468508
Weight: 22 kgRoof free outlet area: 0.098 m2
ACCESSORIES
Roof curb BOGA-03-1-c-2
Flat roof socket STEZ-01-3
Flexible connecton STEZ-02-3
Adapter plate STEZ-04-3
Back draught shutter STEZ-05-3
Inlet sound attenuator STEZ-07-3
Potentiometer STYZ-01-51-0-1
Mounting frame (included in delivery).
Fan code Nom. power kW Supply voltage Max Speed
r/minNom.
current ATemperature
range °C
STEC-355 0.25 1~ 200-277 VAC 50/60 Hz 1410 1.1 –25 - +60
FAN AND MOTOR DATAPRODUCT CODERoof Fan STEC-355-11b-c-0-1
Size (a)
Motor type (bbb)1 = 1-phase motor
Insulation (bbb)1 = non-insulated version
Accessory package (bbb)0 = basic1 = including safety switch2 = including safety switch and EC controller
Material (c)1 = painted galvanised sheet metal, black2 = Al/Zn coated sheet metal Construction (d)0 = standard
Generation (e)
WIRING
A STEC-355-111-c-0-1 (fan packages 0 & 1)
B STEC-355-112-c-0-1 (fan package 2)
See corresponding wiring diagram on pages 29 - 30.
Fläkt Woods 10076 GB 2017.12.11 Specifications are subject to alteration without notice
STEC Non-insulated Roofmaster - Technical Catalogue16
TECHNICAL DATA - STEC-400
FAN DATA
For information how to calculate sound data, sound pressure level and remote attenuation, see page 7.
70
65 dB(A)
60
1450 r/min
1200
1000
800
50%
48
40
48
40
30
0 1000 2000 3000 4000
0
100
200
300
400
500
600
0 0,2 0,4 0,6 0,8 1 1,2
qv (m³/h)
Δps(P
a)
qv (m3/s)
Nominal flow rate according to Regulation 1253/2014 is 1.032 m³/s. The fan is classified as NRVU-UVU.
SOUND DATA
Fan code Sound path Min r/min Max r/minCorrection Koct (dB) in octave band mid-frequency (Hz)
63 125 250 500 1000 2000 4000 8000
STEC-400
Surroundings 0 894 3 0 1 –2 –4 –12 –20 –29Surroundings 894 1450 –3 0 0 –3 –3 –11 –19 –27
Inlet duct 0 894 –1 4 1 –5 –8 –6 –12 –29Inlet duct 894 1450 –10 2 3 –4 –6 –11 –13 –14
Fläkt Woods 10076 GB 2017.12.11 Specifications are subject to alteration without notice
Roofmaster - Technical Catalogue STEC Non-insulated 17
TECHNICAL DATA - STEC-400
DIMENSIONS AND WEIGHT
647649
359
Ø12
498
622
498578
Weight: 27 kgRoof free outlet area: 0.123 m2
ACCESSORIES
Roof curb BOGA-04-1-c-2
Flat roof socket STEZ-01-4
Flexible connecton STEZ-02-4
Adapter plate STEZ-04-4
Back draught shutter STEZ-05-4
Inlet sound attenuator STEZ-07-4
Potentiometer STYZ-01-51-0-1
Mounting frame (included in delivery).
Fan code Nom. power kW Supply voltage Max Speed
r/minNom.
current ATemperature
range °C
STEC-400 0.5 1~ 200-277 VAC 50/60 Hz 1450 2.2 –25 - +50
FAN AND MOTOR DATAPRODUCT CODERoof Fan STEC-400-11b-c-0-1
Size (a)
Motor type (bbb)1 = 1-phase motor
Insulation (bbb)1 = non-insulated version
Accessory package (bbb)0 = basic1 = including safety switch2 = including safety switch and EC controller
Material (c)1 = painted galvanised sheet metal, black2 = Al/Zn coated sheet metal Construction (d)0 = standard
Generation (e)
WIRING
A STEC-400-111-c-0-1 (fan packages 0 & 1)
B STEC-400-112-c-0-1 (fan package 2)
See corresponding wiring diagram on pages 29 - 30.
Fläkt Woods 10076 GB 2017.12.11 Specifications are subject to alteration without notice
STEC Non-insulated Roofmaster - Technical Catalogue18
TECHNICAL DATA - STEC-450
FAN DATA
For information how to calculate sound data, sound pressure level and remote attenuation, see page 7.
85
80
75 dB(A)
70
1560 r/min
1400
1200
1000
55%
5040
50
40
30
0 1000 2000 3000 4000 5000 6000
0
200
300
400
500
600
700
0 0,2 0,4 0,6 0,8 1 1,2 1,4 1,6 1,8
qv (m³/h)
Δps(P
a)
qv (m3/s)
Nominal flow rate according to Regulation 1253/2014 is 1.519 m³/s. The fan is classified as NRVU-UVU.
SOUND DATA
Fan code Sound path Min r/min Max r/minCorrection Koct (dB) in octave band mid-frequency (Hz)
63 125 250 500 1000 2000 4000 8000
STEC-450
Surroundings 0 894 3 0 1 –2 –4 –12 –20 –29Surroundings 894 1560 –3 0 0 –3 –3 –11 –19 –27
Inlet duct 0 894 –1 4 1 –5 –8 –6 –12 –29Inlet duct 894 1560 –10 2 3 –4 –6 –11 –13 –14
Fläkt Woods 10076 GB 2017.12.11 Specifications are subject to alteration without notice
Roofmaster - Technical Catalogue STEC Non-insulated 19
TECHNICAL DATA - STEC-450
DIMENSIONS AND WEIGHT
737739
390
Ø12
603
603
668
712
Weight: 36 kgRoof free outlet area: 0.158 m2
ACCESSORIES
Roof curb BOGA-05-1-c-2
Flat roof socket STEZ-01-5
Flexible connecton STEZ-02-5
Adapter plate STEZ-04-5
Back draught shutter STEZ-05-5
Inlet sound attenuator STEZ-07-5
Potentiometer STYZ-01-51-0-1
Mounting frame (included in delivery).
Fan code Nom. power kW Supply voltage Max Speed
r/minNom.
current ATemperature
range °C
STEC-450 0.97 3~ 380...480VAC 50/60 Hz 1560 1.7 –25 - +60
FAN AND MOTOR DATAPRODUCT CODERoof Fan STEC-450-31b-c-0-1
Size (a)
Motor type (bbb)3 = 3-phase motor
Insulation (bbb)1 = non-insulated version
Accessory package (bbb)0 = basic1 = including safety switch2 = including safety switch and EC controller
Material (c)1 = painted galvanised sheet metal, black2 = Al/Zn coated sheet metal Construction (d)0 = standard
Generation (e)
WIRING
A STEC-450-311-c-0-1 (fan packages 0 & 1)
B STEC-450-312-c-0-1 (fan package 2)
See corresponding wiring diagram on pages 29 - 30.
Fläkt Woods 10076 GB 2017.12.11 Specifications are subject to alteration without notice
STEC Non-insulated Roofmaster - Technical Catalogue20
TECHNICAL DATA - STEC-500
FAN DATA
For information how to calculate sound data, sound pressure level and remote attenuation, see page 7.
85
8075 dB(A)
70
1570 r/min
1400
1200
1000
58%
4050
55
55
50
40
0 2000 4000 6000 8000 10000
0
200
400
600
800
1000
1200
0 0,5 1 1,5 2 2,5 3
qv (m³/h)
Δps(P
a)
qv (m3/s)
Nominal flow rate according to Regulation 1253/2014 is 2.442 m³/s. The fan is classified as NRVU-UVU.
SOUND DATA
Fan code Sound path Min r/min Max r/minCorrection Koct (dB) in octave band mid-frequency (Hz)
63 125 250 500 1000 2000 4000 8000
STEC-500
Surroundings 0 767 –3 –1 –1 –3 –4 –9 –14 –19Surroundings 767 1570 –7 0 –2 –3 –4 –9 –12 –18
Inlet duct 0 767 0 0 –4 –10 –9 –12 –17 –22Inlet duct 767 1570 –8 0 –4 –9 –10 –11 –15 –19
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Roofmaster - Technical Catalogue STEC Non-insulated 21
TECHNICAL DATA - STEC-500
DIMENSIONS AND WEIGHT
917919
469
844
800
892
800
Ø12
Weight: 56 kgRoof free outlet area: 0.261 m2
ACCESSORIES
Roof curb BOGA-06-1-c-2
Flat roof socket STEZ-01-6
Flexible connecton STEZ-02-6
Adapter plate STEZ-04-6
Back draught shutter STEZ-05-6
Inlet sound attenuator STEZ-07-6
Potentiometer STYZ-01-51-0-1
Mounting frame (included in delivery).
Fan code Nom. power kW Supply voltage Max Speed
r/minNom.
current ATemperature
range °C
STEC-500 1.96 3~ 380...480VAC 50/60 Hz 1570 3.0 –25 - +40
FAN AND MOTOR DATAPRODUCT CODERoof Fan STEC-500-31b-c-0-1
Size (a)
Motor type (bbb)3 = 3-phase motor
Insulation (bbb)1 = non-insulated version
Accessory package (bbb)0 = basic1 = including safety switch2 = including safety switch and EC controller
Material (c)1 = painted galvanised sheet metal, black2 = Al/Zn coated sheet metal Construction (d)0 = standard
Generation (e)
WIRING
A STEC-500-311-c-0-1 (fan packages 0 & 1)
B STEC-500-312-c-0-1 (fan package 2)
See corresponding wiring diagram on pages 29 - 30.
Fläkt Woods 10076 GB 2017.12.11 Specifications are subject to alteration without notice
STEC Non-insulated Roofmaster - Technical Catalogue22
TECHNICAL DATA - STEC-630
FAN DATA
8580
75 dB(A)
1310 r/min
1200
1000
800
61%
60
50
60
50
40
0 5000 10000 15000
0
200
300
400
500
600
700
800
900
1000
0 1 2 3 4 5
qv (m³/h)
Δps(P
a)
qv (m3/s)
Nominal flow rate according to Regulation 1253/2014 is 4.0 m³/s. The fan is classified as NRVU-UVU.
For information how to calculate sound data, sound pressure level and remote attenuation, see page 7.
SOUND DATA
Fan code Sound path Min r/min Max r/minCorrection Koct (dB) in octave band mid-frequency (Hz)
63 125 250 500 1000 2000 4000 8000
STEC-630
Surroundings 0 894 5 1 0 –2 –4 –10 –18 –22Surroundings 894 1310 –9 0 –4 –3 –4 –7 –14 –21
Inlet duct 0 894 16 0 –2 –7 –7 –12 –20 –20Inlet duct 894 1310 –7 5 –3 –9 –8 –10 –17 –21
Fläkt Woods 10076 GB 2017.12.11 Specifications are subject to alteration without notice
Roofmaster - Technical Catalogue STEC Non-insulated 23
TECHNICAL DATA - STEC-630
DIMENSIONS AND WEIGHT
1137 1139
528
Ø12
853
775
1112
1069 775 853
Weight: 82 kgRoof free outlet area: 0.468 m2
ACCESSORIES
Roof curb BOGA-07-1-c-2
Flat roof socket STEZ-01-7
Flexible connecton STEZ-02-7
Adapter plate STEZ-04-7
Back draught shutter STEZ-05-7
Inlet sound attenuator STEZ-07-7
Potentiometer STYZ-01-51-0-1
Mounting frame (included in delivery).
Fan code Nom. power kW Supply voltage Max Speed
r/minNom.
current ATemperature
range °C
STEC-630 2.75 3~ 380...480VAC 50/60 Hz 1310 4.3 –25 - +55
FAN AND MOTOR DATAPRODUCT CODERoof Fan STEC-630-31b-c-0-1
Size (a)
Motor type (bbb)3 = 3-phase motor
Insulation (bbb)1 = non-insulated version
Accessory package (bbb)0 = basic1 = including safety switch2 = including safety switch and EC controller
Material (c)1 = painted galvanised sheet metal, black2 = Al/Zn coated sheet metal Construction (d)0 = standard
Generation (e)
WIRING
A STEC-630-311-c-0-1 (fan packages 0 & 1)
B STEC-630-312-c-0-1 (fan package 2)
See corresponding wiring diagram on pages 29 - 30.
Fläkt Woods 10076 GB 2017.12.11 Specifications are subject to alteration without notice
STEC Non-insulated Roofmaster - Technical Catalogue24
ACCESSORIES INCLUDED IN FAN PACKAGES
SAFE - SAFETY SWITCHThe safety isolation switch has been tested according to IEC 947-3.
It can be ordered and supplied as a part of the roof fan, not wired. The cable is not included in the delivery.
See corresponding wiring diagram on pages 29 - 30. Please see the fan ordering codes.
EC CONTROLLERWith a speed controller it is possible to get a single-speed or a two-speed operation. The relay output provides with alarm or running indication that can be selected by the DIP switch. Speed can also be controlled by 0 - 10 V via BMS (Building Management System).
The EC controller can be ordered and supplied as a part of the roof fan, connected to cable. Please see the fan ordering codes.
Internal cabling is carried out at the factory. Information for the user is available in the installation manual.
Modbus RTU communication with EC motor is still possible in fan sizes 355 - 630.
Fläkt Woods 10076 GB 2017.12.11 Specifications are subject to alteration without notice
Roofmaster - Technical Catalogue STEC Non-insulated 25
Roof curb, EI30 BOGA-aa-1-c-2
Fan size (aa)005, 01, 02, 03, 04, 05, 06, 07
Back draught shutter (b) 1 = with shutter
Height and insulation class (c)1 = 980 mm, EI30, 50 mm insulation2 = 1230 mm, EI30, 50 mm insulation
Generation (d)2
BOGA - ROOF CURB WITH INSULATION EI30The BOGA consists of a sheet metal duct, insulated inside with 50 mm thick mineral wool mat. The insulation is backed with perfo-rated sheet metal.
The roof curb is equipped with two cable glands and one built-in conduit, which can accommodate two cables for electrical con-nection to the roof fan. Adjustable mounting brackets, which can be set to suit the pitch of the roof, are fitted to the outside of the roof curb.
There are shutter plates located inside the roof curb.
Roof fan can be installed on the roof curb using the mounting frame that is included in the roof fan delivery as standard.
The roof curb is made of aluminum and zinc coated sheet metal.
ACCESSORIES TO BE ORDERED SEPARATELY
Size 07(for STEC-630)
Sizes 01 - 06(for STEC-225...500)
Model A (c = 1) A (c = 2) B C D E F G W1 (kg) W2 (kg)BOGA-01-1-c-2 980 1230 442 211 310 368 485 325 18 22BOGA-02-1-c-2 980 1230 442 211 310 368 485 325 18 22BOGA-03-1-c-2 980 1230 622 435 530 468 705 545 43 53BOGA-04-1-c-2 980 1230 622 435 530 498 705 545 43 53BOGA-05-1-c-2 980 1230 712 435 530 603 705 545 43 53
BOGA-06-1-c-2 980 1230 955 768 865 800 1040 880 85 105
BOGA-07-1-c-2 980 1230 1112 768 865 1) 1040 880 85 105
1) See separate illustration for size 630. W1 = Weight in kg for A (c = 1)W2 = Weight in kg for A (c = 2)
DIMENSIONS AND WEIGHT
�B�E
�C
�G
F
775853
A
D
775853
Height of the ductconnection: 60 mm Ø160
250
980/1250
425
�335�245
�265
Ø155
Size 005(for STEC-190)
Fläkt Woods 10076 GB 2017.12.11 Specifications are subject to alteration without notice
STEC Non-insulated Roofmaster - Technical Catalogue26
ACCESSORIES TO BE ORDERED SEPARATELY
ModelOctave band mid frequency (Hz)
63 125 250 500 1000 2000 4000 8000BOGA-01-1-1-2 –1 –2 –3 –11 –19 –15 –13 –9BOGA-02-1-1-2 –1 –2 –3 –11 –19 –15 –13 –9BOGA-03-1-1-2 0 –1 –2 –9 –16 –13 –11 –8BOGA-04-1-1-2 0 –1 –2 –9 –16 –13 –11 –8BOGA-05-1-1-2 0 –1 –2 –9 –16 –13 –11 –8BOGA-06-1-1-2 0 –2 –3 –8 –13 –11 –9 –7BOGA-07-1-1-2 0 –2 –3 –8 –13 –11 –9 –7
ModelOctave band mid frequency (Hz)
63 125 250 500 1000 2000 4000 8000BOGA-01-1-2-2 –3 –4 –5 –14 –22 –19 –15 –11BOGA-02-1-2-2 –3 –4 –5 –14 –22 –19 –15 –11
BOGA-03-1-2-2 –2 –3 –4 –12 –19 –16 –13 –9
BOGA-04-1-2-2 –2 –3 –4 –12 –19 –16 –13 –9
BOGA-05-1-2-2 –2 –3 –4 –12 –19 –16 –13 –9
BOGA-06-1-2-2 –1 –3 –6 –12 –15 –12 –10 –8
BOGA-07-1-2-2 –1 –3 –6 –12 –15 –12 –10 –8
SOUND ATTENUATION WHEN USING BOGA EI30, L = 980
SOUND ATTENUATION WHEN USING BOGA EI30, L = 1230
BOGA SOUND ATTENUATION
Model D D1 B B1 H H1 z x d Weight (kg)STEZ-01-1 182 212 782 682 260 40 6x7 4.5STEZ-01-2 253 283 782 682 260 40 6x7 4.5STEZ-01-3 358 392 892 792 260 40 8x9.5 5.0STEZ-01-4 358 392 962 862 260 40 8x9.5 6.0STEZ-01-5 454 488 1052 952 260 40 8x9.5 7.0STEZ-01-6 454 488 1235 1132 260 40 8x9.5 8.0
STEZ-01-7 564 600 1452 1352 260 140 12x9.5 9.5
H1
z x d
�B1�B
H
ØD
ØD1
FLAT ROOF SOCKET STEZ-01The roof socket STEZ-01 is made of corrosion resistant fibre glass. It is designed for mounting on flat roofs or roofs with a maximum pitch of 15 °.
For saddle roofs a BOGA roof duct is available. The roof socket is equipped with a connection flange according to DIN 24 154, part 1.
The roof is secured to the flat roof socket by means of 4 screws.
Fläkt Woods 10076 GB 2017.12.11 Specifications are subject to alteration without notice
Roofmaster - Technical Catalogue STEC Non-insulated 27
ACCESSORIES TO BE ORDERED SEPARATELY
Model ØD ØD1 B z x d Weight, kgSTEZ-04-1 182 212 435 6 x M8 2.2STEZ-04-2 253 283 435 6 x M8 2.2STEZ-04-3 358 392 548 8 x M8 3.6STEZ-04-4 358 392 618 8 x M8 4.6STEZ-04-5 454 488 708 8 x M8 6.1STEZ-04-6 454 488 888 8 x M8 9.5STEZ-04-7 564 600 1108 12 x M8 14.7
STEZ-04 - MOUNTING PLATETo be used under the BOGA roof curb to enable a circular duct connection.
STEZ-04 Mounting plate can be used with BOGA EI30 and inlet sound attenuator STEZ-07 but not together with BOGA EI120.
z x d
�B
ØDØD1
FLEXIBLE CONNECTION STEZ-02The flexible connection STEZ-02 is used to disconnect the fan from the ductwork. The flanges are according to DIN 24 154, part 1
Model D D1 D2 H z x d Weight (kg)STEZ-02-1 182 212 232 130 6x7 0.7STEZ-02-2 253 283 303 130 6x7 2.0STEZ-02-3 358 392 418 140 8x9.5 3.4STEZ-02-4 358 392 418 140 8x9.5 3.4STEZ-02-5 454 488 514 140 8x9.5 4.2STEZ-02-6 454 488 514 140 8x9.5 4.2STEZ-02-7 564 600 634 140 12x9.5 5.4
ØD1
H
ØD2ØD
z x d
BACK DRAUGHT SHUTTER STEZ-05Back draught shutter prevents outdoor air to stream into the duct system while the roof fan is off. The back draught shutter is made of aluminium and zink coated sheet steel and the flanges are according to DIN 24 154, part 1.
Model D D1 D2 H z x d Weight (kg)STEZ-05-1 182 212 232 130 6x7 1.9STEZ-05-2 253 283 303 225 6x7 3.4STEZ-05-3 358 392 418 238 8x9.5 6.0STEZ-05-4 358 392 418 238 8x9.5 6.8STEZ-05-5 454 488 514 270 8x9.5 8.0STEZ-05-6 454 488 514 270 8x9.5 8.0STEZ-05-7 564 600 634 330 12x9.5 12.4
H
ØD2
ØD
z x d ØD1
Fläkt Woods 10076 GB 2017.12.11 Specifications are subject to alteration without notice
STEC Non-insulated Roofmaster - Technical Catalogue28
STYZ-01-51-0-1 - POTENTIOMETERThe potentiometer is used to control the speed of the EC-motor. The potentiometer needs a supply 10 VDC and gives a stepless output signal of 0-10 V DC.
TECHNICAL FEATURES:Supply voltage: 10 VDCOutput signal: 0 - 10 VDCResistance: 10 kΩ (ohm)IP rating: IP 20
ACCESSORIES TO BE ORDERED SEPARATELY
Model B B1 E U H Weight (kg)STEZ-07-1 690 390 368 660 442 15STEZ-07-2 690 390 368 660 442 15STEZ-07-3 803 503 468 760 622 35STEZ-07-4 873 573 498 760 622 40STEZ-07-5 963 663 603 960 712 45STEZ-07-6 1133 833 800 960 955 60STEZ-07-7 1363 1063 1) 960 1112 80
1) See separate illustration for size 7.
ModelOctave band mid frequency (Hz)
63 125 250 500 1000 2000 4000 8000STEZ-07-1 –1 –2 –4 –9 –13 –20 –21 –12STEZ-07-2 –1 –2 –4 –9 –13 –20 –21 –12STEZ-07-3 –1 –2 –6 –9 –15 –18 –18 –11STEZ-07-4 –1 –2 –6 –9 –16 –19 –19 –12STEZ-07-5 –1 –3 –8 –14 –18 –24 –25 –23STEZ-07-6 –1 –3 –8 –14 –18 –24 –25 –23STEZ-07-7 –1 –2 –7 –13 –16 –22 –23 –20
SOUND ATTENUATION WHEN USING STEZ-07 PRESSURE LOSS IN PA
853
�U�E
775853
H
775
B1B
0.1 0.2Qv, m3/s
∆pt,
Pa
0.3 0.4 0.5 11
532
10
20305060
2 3 4 5 6
STEZ
-07-1,
STEZ
-07-2 ST
EZ-07
-3
STEZ
-07-4
STEZ
-07-5
STEZ
-07-6
STEZ
-07-7
STEZ-07 - INLET SOUND ATTENUATORThe STEZ-07 sound attenuator is used to attenuate the sound level to the duct on the inlet side. It is made of aluminium and zinc coated sheet metal. The baffles inside are made of mineral wool and they are covered by fibre class film. The inlet of the sound attenuator is square. If the sound attenuator is supposed to be connected to a circular duct, a separate mounting plate STEZ-04 can be used under the STEZ-07.
Size 07
Sizes 01 - 06
Fläkt Woods 10076 GB 2017.12.11 Specifications are subject to alteration without notice
Roofmaster - Technical Catalogue STEC Non-insulated 29
WIRING DIAGRAM A (FOR FAN PACKAGES 0 & 1)
STEC-190...310
STEC-355...400
STEC-450...630
Fläkt Woods 10076 GB 2017.12.11 Specifications are subject to alteration without notice
STEC Non-insulated Roofmaster - Technical Catalogue30
WIRING DIAGRAM B (FOR FAN PACKAGE 2)
STEC-190...630
Fläkt Woods 10076 GB 2017.12.11 Specifications are subject to alteration without notice
Roofmaster - Technical Catalogue STEC Non-insulated 31
PRODUCT CODERoof Fan STEC-aaa-bbb-c-d-1
Fan size (a)190, 225, 310, 355, 400, 450, 500, 630
Motor type (bbb)1 = 1-phase motor (sizes 190 - 400)3 = 3-phase motor (sizes 450 - 630)
Insulation (bbb)1 = non-insulated version
Accessory package (bbb)0 = basic1 = including safety switch2 = including safety switch and EC controller
Material (c)1 = painted galvanised sheet metal, black2 = Al/Zn coated sheet metal Construction (d)0 = standard
Generation (e)
ACCESSORIESRoof curb with insulation EI30 BOGA-aaa-b-c-d
Size (aaa)005, 01, 02, 03, 04, 05, 06, 07
Back draught shutter (b)1 = with shutter
Height and insulation class (c)1 = 980 mm, EI30, 50 mm insulation2 = 1230 mm, EI30, 50 mm insulation
Generation (d)2
Flat roof socket STEZ-01-b
Size (a)1, 2, 3, 4, 5, 6, 7
Flexible connection STEZ-02-b
Size (a)1, 2, 3, 4, 5, 6, 7
Mounting plate STEZ-04-b
Size (a)1, 2, 3, 4, 5, 6, 7
Back draught shutter STEZ-05-b
Size (a)1, 2, 3, 4, 5, 6, 7
Inlet sound attenuator STEZ-07-b
Size (b)1, 2, 3, 4, 5, 6, 7
Potentiometer STYZ-01-51-0-1
PRODUCT AND ACCESSORY CODES
FWG-
ROOF
MAS
TER
STEC
Tec
hnic
al c
atal
ogue
-GB-
2017
.12.11
-100
76GB
© C
opyr
ight
201
7 Fl
äkt W
oods
Gro
up
WWW.FLAKTWOODS.COM ROOFMASTER STEC | 10076GB | 20171211WE BRING BETTER AIR™ TO LIFE
» To learn more about our offering and get in contact with your nearest sales representative please visit www.flaktwoods.com
With over a century of innovation and expertise to share with our customers, Fläkt Woods is a global leader in Air Technology products and solutions. We specialize in the design and manufacturing of a wide range of products and solutions for Air Movement, Air Treatment, Air Distribution, Air Management and Air Diffusion with focus on two major benefits – Air Comfort and Fire Safety. With market presence in 65 countries we are in a unique position to be a local supplier and an international partner in our customer’s projects.
Our product brands such as RegAsorp, eQ®, eQ Prime®, JM Aerofoil®, Econet®, Veloduct®, Optivent®, Optimix®, Econovent® and Cleanvent® are well-known and trusted by customers all over the world to deliver high quality and energy efficient solutions.
Manufacturer:
Fläkt Woods OyKalevantie 39, FI-20520 Turku, FinlandTel. +358 20 4423000email info@flaktwoods.com www.flaktwoods.com
STEC
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